Matrix user forums

Hi all,
Regarding the attached flowsheet, I find I need another RC3 momentary, latched push button to enable LOCAL checking of the binary data that is normally received from remote locations via the RS232 input and displayed on the Port B LEDs.
Normal operation without this addition is:- Unit powered up, will receive any alarm via the RS232 input which is then displayed as a binary number on the LEDs and any further signals from RS232 are locked out.
When the NEW push button is pressed and released, it needs to display binary number 17 on the LEDs and each subsequent button operation adds 17 to the count until binary 238 is reached when the last and final push button operation increases the count by just 2 to give binary number 240. At ALL times, however, the basic alarm should not be affected and an incoming RS232 alarm signal should override/ignore this operation which is just for checking purposes.
Although the counting part is ok I cannot seem to incorporate it into the existing flowchart without messing it up and I cant seem to get the interrupt data in place or get RC3 to be recognised - only if I give it an RA3 LED to light!! So, I have had to come back to the forum after spending a long time trying but not very successfully - maybe Martin (as you had a lot of useful input into this originally and very kindly) or someone might be able to help.

Cheers,

Chris

Hi Chris,
Not sure if attached Flowchart is what your after?

Martin

Hi Martin,
Yes, the counting process is absolutely fine ( will study and learn how you did that! ) - the only thing is that whilst in that process of going through the numbers, an arriving RS232 snumber should override and stop that process and display the incoming binary number whatever it might be and lock out anything else - as per the original scheme.

Can you give me the meaning of the decision box that includes the 5, 8 and 13 for future reference - I was wondering about the '5' in the original flowchart and didnt understand why it was used in the calculation icon there either....

Sorry Martin, I wa so obsessed with how you got that sorted but just realised that the RS232 input and the other 3 push buttons and their LEDs are not working - I am having a look but you will probably spot a remedy and it was the sort of thing that I wa sfinding but couldnt correct anyway...

Woops! Soory,
I did not test all.
Try these versions.
See which one you prefer.

Martin

Hi Martin,

Just got back to computer -
Many thanks for the latest versions...
Both versions were fine (and I likeed the single press of C3 now) - although I havent spotted the difference between the two versions yet!
One point I havent made very clear, is that it mustn't be possible to operate C3 at any time during or after an RS232 signal is received/locked in (until a system power down reset).
I also realise that C3 needs to loop round and round so when 240 is reached the next button press gives 17 etc. (otherwise the system has to be reset each time which is - intentionally - not straightforward.
Would appreciate those two 'tweaks' if you could and that would be perfect.

Thanks muchly,

Chris

Hi Chris,
can you try the new tweaks and let me know how you get on please.


Martin

Hi Martin,
Absolutely spot on and works beautifully - can't thankyou enough for all your effort and as I have said before, it is educational for me too as I try and suss out the ways of doing things. I just wish I had the time to get to grips with Flowcode a bit more - although I suppose I DO spend a lot of time trying to get things to work anyway and then sometimes driven to having to come to the forum in frustration.
So many thanks once again and I can progess the hardware now.

Very best regards,

Chris

You're welcome Chris,
Glad Flowchart works for you.
Thanks for letting us know

Martin